Abstract
Complete oxidation of 2,000 ppm CO in H2 is attained over 10 wt.% Pt/CNT (carbon nano-tube) catalyst (0.019 g) at room temperature by adding 2,000 ppm O2 to hydrogen flowing at 100 mL/min. By insetting 5 wt.% Pt/CNT catalyst (0.8 g) in front of a PEFC (polymer electrolyte hydrogen fuel cell), the PEFC generated maximum wattage of 0.45 V × 0.75 A/cm2 with no suppression for more than 7 h in a flow of H2 (400 mL/min) containing 1,000 ppm CO. This result suggests a possibility of the hydrogen fuel cell operating in the shift gas.
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